Our RO is located in the basement laundry room below our kitchen. I use a 3/8" polyline to feed both a faucet and refrigerator ice maker in the kitchen.
Without a permeate pump installed on the RO, the RO's automatic shutoff valve will stop production when the storage tank pressure reaches 60% of the incoming water pressure. As your water source is a private well, I seem to recall your pump pressure may be 30/50 so your RO pressure will likely be only about 18 psi. Even if you do not relocate your RO unit, you may want to consider adding an electric pressure pump to the RO feedline to boost the pressure through the membrane so it will work more efficiently and consistantly with the added benefit of increasing the amount of water in storage at higher pressure.
A permeate pump is a nonelectric pump which is powered by the RO waste flow which flows to drain. A PP will also allow the membrane to operate more efficiently as the pump will remove all back pressure on the membrane from the storage tank. Without back pressure, the membrane will produce more water, more quickly, thereby reducing the amount of waste water and also, provides the ability to increase the storage tank pressure to 90% of the incoming pressure.